Pump valve unit



M y 5, 1951 J. BERGESEN 2,553,352

PUMP VALVE UNIT Filed July 24, 1946 Patented May 15,1951

' :UNI PATENT PUMP VALVIFUNIT .-JuneuBergescnestaten.Islandg -N. Y.

1 Applicaitidnflii-ly 24, ISQSSSBHBLINOSGSGOZO provide :-a :minimum :of obstruction: to cathe flow of. fluid'zand ithatsthey. be: readily ropenedand -;.closed' by the variations 1 pressure 1' produced said-pump. i It:is also. highlyzzdesirable: that -.thevalve-andrlits associated elements'be ,in; .a --.-.single:.unit*- which may rrbe readily vremovedgfor repair-r. replacement. 'Heretofore; valvesof: this type. have: not had; all the. characteristics? which --are .-desirab1e-.-and the presentinvention: is. intended and; adapted F1103. provide 1 a:- structure; of this type twhich. is. free. from. the disadvantages inherent. vin prior structures; of .thisu type.

It.isthereforelamongthe objects of thepresent invention .-to provide a valve ;of .the; disc type which is. vso mounted thatquponathe.-movement thereof from the valve seat, it, .is :adapted-to open- .a .relatively large .area. for the. free fiow of fluidthrough. the 'valve opening.

It is also among the objects roftheppresent inventionto, provide .a..va1ve structurewhioh is ..comprised...within.a unit; which may, .be; readily placed position: for operation or removed for -repair. .or replacementand-which.whenoperating-positionis .firmly locked against .accidental displacement.

. It is still further among....the. o,bjects..,of. the present .invention...to .providerawalve .structure .whi'ch.gives a minimum of.-obstruction::;to-athe f'fiowof. =fiuid and which is contained within .;a l-relatively confinedspace.

.In practicing the present: invention,-.-.-there.-is provided -.-a valve seathaving a.-;horizontal-.;.-surface, said: seat; beingr-secured z-inr. an openinggwin ;.a,--suitable casing. .The. outer face: of theaseat is threaded and ail-internally threaded:ring, -cooperates .therewith. A spiderv is ;-pro.vided,-. :the free ends of which are secured toathe.outerxface of .the ring andstherotherend of which is? provided -with= a central. hub :to" which; 2:; depending rguide material has a: central opening. :to accommodate theguidepost and aspring is.-interposed"between the upper. face ofxthenvalve rand the .:low.er :face

-- of the hub 'to"'bias s thevalve againsti'the yalve 'i'se'at. 'Theopeningrini-the valve :isz; sucln.=that :it'

fits :fairly tightly. aroundathe post rbuuznotsi su-f- -fioiently"to.: cause it. ztozbind .in'iits movements.

:the .accompanying itdrawings v:constitmaing-z a npartizhereof; andziniwhich.;like:. reerence .char 2.acters.:-indicate:.likezparts,

.i Fig.- 1 is a top planx':view.1of':. a form ofrvalve tmade .in accordance with the presenttinvention; s Fig.':21is a vertical crossesectional: view thereof -taken along the line 2 -2 ofiFigei 1, and 5 I Eig. 13 afifragmentary cross-5secti'onaloview of the? central .partrof. amodified form off-valve .i'disc, assomeaparts being .'shown =1: in: elevation-fiat r.- clearness.

The casing l :maynbe-r of any suitable. type of 0.; shape-" and it has anzannulareopening therein into which is fitted a valve seat txwhichmaywbe .iifixdi'in place as1:by-r-one orwmoreiset screws 3. #The valve-seat mayabe' .made of. anysuitable ma- -:.-terial1 such. .as .bronze.- or=i.the alike. Thetmm er 15 11983113 ofziseati 2 iszprovidedzvvith.anannularzflange 4; .which; 'is:threaded= at its :outeraface.

11A hub; 5z. hasxa spider. formed :integral'ly there- :Lwith: consistingofr'three legs. 6, kand fl, the .upper .zends ofewhich-s are. united. with -hub 5 -and;-.which :15 extend radially.outward; -spaced 120 apart;--:'and

"31311811 vertically.doWnward'. Each of the'zlegsris azvprovided: with =1 a relatively ..-narrow; .upsta'nding :rib'it QutQv'strengthen .and stiffen: zthezlegsz. of: the

spider. :The .lower. endszthereofw are :united -or 26::integral withring- .1 fl which is-integrallythreaded i'iend'0f h11bT5 and thllS hold post 'l'3" fi-rmly in its superativepcisition.

1 .-=.A.i.valve l1. madewof suitable material, such: as vulcanized ffiber or: molded: compositions, such as; a .phenol -:formaldehyde.a,:condensation product :and filier, hasa lower horizontal bearing surface #18 in -contact" with the -upper bearing face IQ of i'fiang'e 4. It has: a centrabopeningx 20 which is ='of such --;size asyto allow-' a close fit-Witlr post I 3 to permit a sufficient amount of clearance-s0 that inoperating-conditions; valve I L may'move freely up: and down without binding on post 3. In' the upper" face of valve I I --is a recess' 2 I *to accommod'ate the': lower end of -coil spring-22,

552thempening2fitupwar'dly toamerge: with: bearing surface l8, thus providing a guide to direct the flow of fluid into the space between surfaces l8 and I9 and to minimize turbulence and thus facilitate the flow of fluid.

A projection 26 is formed on ring i0, and has a central opening in which latch member 21 is adapted to slide. Said latch has a reduced portion 27' passing through an opening in projection 26, terminating in a knob 28. Spring 29 surrounding said neck tends to hold latch 21 in opening 30 in casing I.

The operation of the valve is as follows. When assembled and ready to operate, the parts'are in the positions shown in Fig. 2. Upon suction or pressure being exerted by the pump in such a direction as to raise valve ll, it slides on post [3 against the compressive action of spring 22 tion and the legs thereof may be varied to a ing surface equivalent to lower surface 18 and may be otherwise modified so as to allow a reversal of the position of the valve when the lower seat has become unduly worn. At the and provides an annular passageway between surfaces It and I9. There is very little interference with the flowing due to the fact that the spider has only three relatively narrow legs and a relatively large area is open and unobstructed for the free flow of fluid. The height of the legs of the spider is relatively short but sufficient so that a full opening between the bearing surfaces is obtained. At the same time, because of the relative shortness of the legs, the valve unit may be installed in confined spaces. Upon the reversal of the pump, the action of spring 22 closes valve [1.

When it is desired to remove the valve from the assembly for repair or replacement purposes, no tools are required. The operator grasps knob 28, and raises latch 21 from opening 30. He then grasps the spider and turns the same to remove unthreaded ring 10 from flange If spring 22 is attached to both hub 5 and valve l1, all of the parts in assembled position are simultaneously removed. If the spring 22 is not attached, then it is a simple matter after the spider is removed to lift up the spring and valve. A tool is necessary only in the initial assembly of post I 3 on hub 5.

The modification shown in Figs. v1 and 2 is particularly adapted for use in connection with pumps for water, medium and heavy oils and the like. However, where light oils or gasoils are to be pumped, there may be a leakage at the junction of valve ii and post l3 if they are not properly fitted together. To overcome this possibility, the modification of Fig. 3 is provided. Instead of valve I! having an opening pass ing all the way through the valve, there is provided an opening 20' which does not pass all the way through valve H but terminates short thereof, leaving a web 3| to close the lower end of the opening. The lower end of post I3 is provided with a longitudinal slot 32 extending upwardly a sufficient distance so that when valve I1 is in its uppermost position, a groove 32 communicates with the outside atmosphere. Thereby any dash pot action is avoided and valve I! is permitted to move freely up and down post I 3.

Although the invention has been described setting forth two embodiments thereof, such embodiments do not limit the invention but are intended to illustrate the same. It is possible to make many variations in the structure within the spirit of the invention. For instance, the materials of construction may be of any type or character suitable for the purpose and other 'materials than have been specifically set forth above may be used. The function of .the spider is primarily to keep the valve in its proper posimeeting surfaces of post l3 and opening 20, there may be provided a bushing fixed to the valve of such a material as to prevent wear due to the sliding action of the valve on the post. It may be secured in any desired manner to the valve.

These and other changes in the details of construction will occur to the skilled artisan in this field and therefore the invention is to be broadly construed and not to be limited except by the character of the claims appended hereto. Iclaim: 1 l. A valve unit comprising a casing having a valve opening, an annular seat in said opening and having a smooth cylindrical internal face, said seat having a horizontal flange extending outward from said seat and being secured to said casing and having a flat upper seating surface, the outer face of said flange being threaded, an internally threaded ring meshing with the threads on said flange, a spider having a central hub fixed to said ring, a depending guide post secured in said hub, a valve adapted to contact with said seating surface having a central opening through which said post extends, said post terminating adjacent the under face of said valve when the latter is on said seat, said valve opening being free from obstructions, the central part of the lower face of said valve being below said seat and inclined upwardly towards the edge of said valve to direct fluid past said valve and seat. a

2. A valve unit comprising a casing having a valve opening, an annular seat. in said opening and having a smooth cylindrical internal face, said seat having a horizontal flange extending outward from said seat and being secured to said casing and having a flat upper seating surface, the outer face of said flange being threaded, an internally threaded ring meshing with the threads on said flange, a spider having a central hub fixed to said ring, a' depending guide post secured in-said hub, a valve adapted to contact with said seating surface having a central opening through which said post extends, said post terminating adjacent the under face of said valve when the latter is on said seat, said valve opening being free from obstructions, the central part of the lower face of said valve being below said seat and inclined upwardly towards the edge of said valve to direct fluid past said valve and seat, external ribs on the legs of said spider to stiffen the same.

. 3. A valve unit comprising a casing having a valve opening, an annular seat insaid opening and having a, smooth cylindrical internal face, said seat having a horizontal flange extending outward from said seat and bein secured to I said casing and having a flat upper seating surface, the outer face of said flange being threaded, an internally threaded rin meshing to contact with said seating surface having a central opening through which said post extends, said post terminating adjacent the under face of said valve when the latter is on said seat,

said valve opening being free from obstructions, 5

the central part of the lower face of said valve being below said seat and inclined upwardly towards the edge of said valve to direct fluid past said valve and seat, external ribs on the legs of said spider to stifien the same, a recess in the upper face of said valve, and a spring between said hub and valve and nesting in said recess.

JUNEUS BERGESEN.

REFERENCES CITED The following references are of record in the file of this patent:

Number UNITED STATES PATENTS Name Date Cook Jan. 12, 1897 Miller Apr. 10, 1900 Ginaca Jan. 15, 1901 Stange Sept. 12, 1911 Miller Feb. 10, 1914 Bullen Oct. 5, 1926 Trottier Feb. 21, 1928 Mead Mar. 6, 1928 McGregor July 17, 1928 Allen Apr. 27, 1937 Abegg Oct. 4, 1938 

